Working with hydrogen under pressure.



UNITED ':raarns arnivor oririon A CARL BOSCH AND FRANZ IJAPPE, OF LUDWIG SHAFEN-ON-THE-RHINE, GERMANY,

ASSIGNORS TO BADISGHE ANILIN &

RHINE, GERMANY, A CORPORATION.

SODA FABBIK, OF LUDWIGSHAFEN-ON-THE- WORKING wrrH HYDROGEN UNDER PRESSURE.

No Drawing.

To all whom z't'ma i concern: 2

Be it known that we, CAigL Boson and FRANZ LAPPE, citizens of the German Empire, residing at Ludwigshafen on the 'Rhine, Germany have invented new and, useful Improvements in Working with Hydrogen Under Pressure,.of which the following is a specification.

When iron apparatus is employed for working with hydrogen (either pure, or in: admixture with other gas, or gases), While employing pressure and a raised temperature, the iron often tends to lose its stahility and finally becomes useless, or there is danger in continuing the operation under the pressure employed; We have found that these difficulties can be overcome by inter posing an atmosphere of nitrogen gas between the hydrogen, or mixture containing hydrogen (which, for the purposes of this invention, is equivalent to hydrogen) and the hot pressure-sustaining wall of the reaction vessel. This can be effected, for instance, by providing a pervious lining to the iron Ves-' sel and passing'nitrogen through the spacebetween the lining and the iron wall. The nitrogen can then either he led away sepa- Specification of Letters Patent.

Application filed June 5', 1913. Serial No. 771,899.

lately or, if desired, it can be passed into the space inside the lining, where it is allowed to mix with the hydrogen, or gases containing hydrogen.

The process of this invention is of particular value when producing am nonla synthetically from its elementsuslng a hot catalytic agent under pressure,

Patented@ct.7,19]l3.-

set 'ourhands in the presence of two subscribing witnesses.

GAR-L BOSCH. FRANZ LAPPE.

Witnesses:

J. ALEo. LLoYo, JOSEPH PFEIFFER. 

